France's taxi drivers erupted into protest on Thursday, with huge travel disruption and incidents of violence around the country.
The drivers are protesting against American ride-hailing app UberPOP in Paris and around the country.
The protest was specifically organised against UberPOP, the app which allows riders to flag down drivers without professional licences.
However, some of the leaflets handed out by drivers seem to be concerned with Uber in general.
next slide will load in 15 secondsSkip AdSkip AdThe app was found to be illegal by French courts at the end of December, but at the end of March that ruling was overturned.
Charles de Gaulle airport has advised people traveling to and from the airport to use trains, since roads are basically inaccessible.
Courtney Love was among those caught up in the chaos, tweeting that "they've ambushed our car and are holding our driver hostage."
Windows were smashed and in some instances, cars were overturned in the worst of the violence.
France isn't the only place where new transport apps have clashed with existing drivers — UberPOP has already been banned in Germany.
next slide will load in 15 secondsSkip AdSkip Ad"We are truly sorry to have to hold clients and drivers hostage. We're not doing this lightly," said Serge Metz, G7 taxi firm chief.
Protests against Uber have hit London too, but without the violence seen in France.